CN217877827U

CN217877827U - Vortex street flow sensor capable of replacing vortex generating body

Info

Publication number: CN217877827U
Application number: CN202222226284.9U
Authority: CN
Inventors: 赵裕宝; 遇明霞
Original assignee: Longkou Bosida Instrument Co ltd
Current assignee: Longkou Bosida Instrument Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-11-22
Anticipated expiration: 2032-08-24

Abstract

The utility model provides a can change vortex street flow sensor of vortex generating body, includes the pipeline, the pipeline sets up the circular tube hole that is used for the medium to pass through, be provided with the vortex generating body in the tube hole, the pipe connection has flow sensor, flow sensor can detect the flow of pipeline, the pipeline is provided with first connecting portion and second connecting portion, first connecting portion pass through the connecting piece and connect flow sensor, the second connecting portion pass through the mounting and fix the vortex generating body, the mounting can be dismantled for the second connecting portion, promptly the vortex generating body can be dismantled and change, the vortex generating body with the connecting piece is on same vertical plane, just vertical plane crosses the tube hole axial lead. On the basis of the structure of the existing vortex street flow sensor, the structure of the vortex generating body is improved, so that the vortex generating body can be detached and replaced relative to the pipeline structure, and when the vortex generating body needs to be replaced, the vortex generating body can be directly detached and replaced, so that the whole vortex street flow sensor structure does not need to be replaced.

Description

Vortex street flow sensor capable of replacing vortex generating body

Technical Field

The utility model relates to a flow sensor equipment technical field specifically is a can change vortex street flow sensor of vortex emergence body.

Background

The vortex shedding flowmeter developed by utilizing the Karman vortex shedding principle can be used for measuring the flow of a pipeline medium, wherein, the main structure of the vortex shedding flowmeter comprises an generating piece and a flow sensor, the medium can directly detect the flow after the generating piece, and in the structure, the generating piece mainly comprises a polygon prism and a cylindrical structure, the existing vortex shedding flow sensor can not directly replace the generating piece, therefore, when the generating piece needs to be replaced, the vortex shedding flow sensor needs to be replaced wholly, and the vortex shedding flowmeter is extremely inconvenient for certain application environments.

SUMMERY OF THE UTILITY MODEL

For solving the problem that the above-mentioned generating body can not be changed alone, the utility model provides a can change vortex street flow sensor of vortex generating body.

The utility model discloses technical scheme as follows:

the utility model provides a can change vortex street flow sensor of vortex generating body, includes the pipeline, the pipeline sets up the circular tube hole that is used for the medium to pass through, be provided with the vortex generating body in the tube hole, the pipe connection has flow sensor, flow sensor can detect the flow of pipeline, the pipeline is provided with first connecting portion and second connecting portion, first connecting portion pass through the connecting piece and connect flow sensor, the second connecting portion pass through the mounting and fix the vortex generating body, the mounting can be dismantled for the second connecting portion, promptly the vortex generating body can be dismantled and change, the vortex generating body with the connecting piece is on same vertical plane, just vertical plane crosses the tube hole axial lead. The vortex generating bodies with different specifications or different shapes can be replaced according to requirements.

Furthermore, a base is arranged at one end, close to the second connecting portion, of the vortex generating body, and a fixing groove which is profiled with the base is formed in the fixing piece. Can limit the vortex generating body and avoid the vortex generating body from falling off.

Preferably, the base has a cross-sectional area greater than a cross-sectional area of the vortex shedder. The water leakage phenomenon at the position of the vortex generating body can be avoided.

In order to improve the sealing performance and avoid water leakage, a sealing strip is arranged between the base and the second connecting part.

In order to limit the installation direction of the vortex generating body, one side of the base, which is far away from the vortex generating body, is provided with a positioning hole, the positioning hole does not penetrate through the base, and the fixing piece is provided with positioning columns which are oppositely arranged at the positions of the positioning holes and can be inserted into the positioning holes.

Furthermore, the base and the fixing piece are inserted and connected in a unique mode. Can only be inserted and fixed in a fixed way so as to avoid the phenomenon of reversion.

Preferably, the length of the vortex generating body is smaller than the diameter length of the pipe hole, and an elastic pad is arranged at one end of the vortex generating body far away from the base. The part that lacks is mended by the elastic pad that has elasticity, avoids the mismatching phenomenon because of the error leads to and takes place.

Preferably, the vortex generator is a triangular prism, a quadrangular prism or a cylinder. Different shapes and specifications can be selected according to requirements.

Preferably, the pipeline, the connecting piece and the fixing piece are connected through bolts and can be detached, and one end, far away from the pipeline, of the connecting piece is connected with the flow sensor through bolts and can be detached. The connection mode is dismantled simply and high-efficiently.

The beneficial effects of the utility model reside in that: the utility model relates to a can change vortex street flow sensor of vortex generating body, on the basis of current vortex street flow sensor structure, improve the structure of vortex generating body, make it can dismantle the change for pipeline structure, when needs change the vortex generating body, can directly dismantle the vortex generating body through the mode of dismantling the mounting to change after demand specification and the shape, fix once more, consequently, under partial application environment, this device can exert special effect.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the pipeline structure of the present invention;

FIG. 3 is a schematic view of the fixing member of the present invention;

the components represented by the reference numerals in the figures are:

1. a pipeline; 11. a tube hole; 12. a first connection portion; 13. a second connecting portion; 2. a vortex generator; 21. a vortex generating body; 22. a base; 221. positioning holes; 23. a sealing strip; 24. an elastic pad; 3. a fixing member; 31. a fixing groove; 32. a positioning column; 4. a connecting member; 5. a flow sensor; 51. and a display screen.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Examples

The vortex street flow sensor capable of replacing the vortex generating body shown in fig. 1-3 comprises a pipeline 1, wherein the pipeline 1 is provided with a circular pipe hole 11 for a medium to pass through, a vortex generating body 21 is arranged in the pipe hole 11, the pipeline 1 is connected with a flow sensor 5, the flow sensor 5 can detect the flow of the pipeline 1, the detection principle is that after the pipeline 1 is inserted into the vortex generating body 21, vortices are alternately generated on two sides of the vortex generating body 21, the vortex frequency is related to the flow velocity of the medium, the law of the vortex frequency is explained by karman vortex street theory, and therefore, the description is omitted.

On the basis of the above structure, further, the pipeline 1 is provided with the first connecting portion 12 and the second connecting portion 13, as shown in fig. 2, the first connecting portion 12 and the second connecting portion 13 include two design modes, one is the same side, and the other is a symmetrical side about the center as shown in the figure.

The purpose is that the vortex shedder 21 is in the same vertical plane as the connection element 4, and the vertical plane passes through the axial center line of the pipe hole 11.

The relative parallelism between the detection mechanism and the vortex generating body 21 is ensured, and the detection is convenient.

In the above configuration, the pipe 1 is detachably connected to the connector 4 and the fixing member 3 by bolts, and the end of the connector 4 remote from the pipe 1 is detachably connected to the flow sensor 5 by bolts. After the connection mode adopts the mode, the disassembly is simple and efficient, and the assembly and the replacement of parts are convenient.

Then, the first connection portion 12 is connected to the flow sensor 5 via the connector 4, and the second connection portion 13 fixes the vortex generating body 21 via the fixing member 3, so that the flow velocity of the medium can be detected as in the conventional structure.

However, this apparatus is different from the conventional apparatus and is a main improvement of this apparatus, and is:

the fixing part 3 can be detached from the second connecting part 13, that is, the vortex generator 21 can be detached and replaced, and the device is different from the prior art in that the vortex generator 21 is directly fixed in an undetachable manner, so that the vortex generators with different specifications or different shapes can be replaced according to requirements.

Specifically, the specific standard shapes of the vortex generating body 21 are: the vortex generating body 21 is a triangular prism, a quadrangular prism or a cylinder.

In the above structure, the detachable fixing method adopted by the vortex generating body 21 is:

the vortex generator 21 has a base 22 at one end thereof adjacent to the second connecting portion 13, and the fixing member 3 has a fixing groove 31 formed to be similar to the base 22. In the pipe 1, the second connection part 13 is provided with an opening into which the vortex generating body 21 can be inserted, then the vortex generating body 21 is inserted from the opening, and after the vortex generating body is inserted, the fixing piece 3 is fixed at the position of the second connection part 13, so that the vortex generating body can be limited and prevented from falling off.

In the above-mentioned structure, the cross-sectional area of the base 22 is larger than the cross-sectional area of the vortex generator 21, and the larger area can be matched with and block the hole after the vortex generator 21 is inserted, and the phenomenon of water leakage at the position of the vortex generator 21 can be avoided, and in the above-mentioned structure, the base 22 includes two layers, and the cross-section of the layer far from the vortex generator 21 is larger than the layer near the vortex generator 21, that is, as shown in fig. 2, in order to provide the sealing strip groove at the side near the vortex generator 21 after the layer far from the vortex generator 21 is larger than the side near the vortex generator 21, and provide the sealing strip 23 between the base 22 and the second connecting portion 13, and further after the sealing strip groove is pressed and fixed by the fixing member 3, the water leakage can be effectively avoided, and the sealing strip groove is provided at the position of the base 22, so as to be convenient for dismounting and replacing, and the use is more suitable for the requirement.

After the above structure is completed, it should be noted that the vortex generating body 21 cannot rotate after being fixed, and the base 22 and the fixing member 3 are preferably inserted only in a single manner. Can only be inserted and fixed in a fixed way so as to avoid the phenomenon that the installation direction of the vortex generating body 21 does not meet the requirement.

In order to realize the above structure, various configurations may be adopted, and one configuration is to provide the base 22 and the copying fixing groove 31 with a non-circular shape and a non-regular polygon shape, so that the mounting direction of the base 22 and the fixing groove 31 can be ensured to be fixed, and then, the mounting direction of the fixing member 3 can be ensured to be unique, that is, the mounting direction of the vortex generating body 21 can be ensured to be unique and fixed.

Besides the above structure, the method shown in the present device, that is, the structure shown in fig. 2, may be adopted, wherein a positioning hole 221 is provided on a side of the base 22 away from the vortex generating body 21, the positioning hole 221 does not penetrate through the base 22, thereby avoiding water leakage, and the fixing member 3 is provided with positioning posts 32 oppositely arranged at the positioning hole 221, and the positioning posts 32 can be inserted into the positioning holes 221.

In addition, in the above structure, it is also necessary to avoid the situation that the installation position of the positioning hole 221 and the position of the positioning column 32 are in a central symmetry state, so that the direction cannot be distinguished when the positioning device is used, therefore, the simplest way is to install one positioning column 32 and one positioning hole 221, and the positioning column 32 and one positioning hole 221 are eccentrically arranged, which has the disadvantage that the stability of a single positioning column 32 is not satisfactory, and in general, it is preferable to install two positioning columns 32 and two positioning holes 221, and the two positioning columns 32 and two positioning holes 221 have one and only one fixing way, so as to avoid the situation of direction error.

Finally, in order to avoid the structural conflict of the device caused by the processing problem, the following structures can be arranged:

the length of the vortex generating body 21 is smaller than the diameter length of the pipe hole 11, and an elastic pad 24 is arranged at one end of the vortex generating body 21 far away from the base 22. The missing part is filled by the elastic cushion 24 with elasticity, so that the mismatching phenomenon caused by errors can be effectively avoided.

Claims

1. A vortex street flow sensor capable of replacing a vortex generator comprises a pipeline (1), wherein the pipeline (1) is provided with a circular pipe hole (11) for a medium to pass through, a vortex generator (21) is arranged in the pipe hole (11), the pipeline (1) is connected with a flow sensor (5), and the flow sensor (5) can detect the flow of the pipeline (1), and the vortex street flow sensor is characterized in that the pipeline (1) is provided with a first connecting part (12) and a second connecting part (13), the first connecting part (12) is connected with the flow sensor (5) through a connecting piece (4), the second connecting part (13) is fixed with the vortex generator (21) through a fixing piece (3), the fixing piece (3) can be detached relative to the second connecting part (13), namely the vortex generator (21) can be detached and replaced, the vortex generator (21) and the connecting piece (4) are on the same vertical plane, and the vertical plane passes through the axial lead of the pipe hole (11).

2. A vortex street flow sensor with replaceable vortex generating body according to claim 1, characterised in that the vortex generating body (21) is provided with a base (22) at one end near the second connecting portion (13), and the fixing member (3) is provided with a fixing groove (31) which is profiled with the base (22).

3. A vortex shedding flow sensor with an exchangeable vortex generator according to claim 2, wherein the base (22) has a cross-sectional area larger than the cross-sectional area of the vortex generator (21).

4. A vortex shedding flow sensor with replaceable vortex generators according to claim 2, wherein a sealing strip (23) is arranged between the base (22) and the second connecting part (13).

5. A vortex street flow sensor capable of replacing a vortex generating body according to claim 2, characterized in that one side of the base (22) far away from the vortex generating body (21) is provided with a positioning hole (221), the positioning hole (221) does not penetrate through the base (22), the fixing part (3) is provided with a positioning column (32) which is oppositely arranged at the position of the positioning hole (221), and the positioning column (32) can be inserted into the positioning hole (221).

6. A vortex street flow sensor with replaceable vortex generating body according to claim 5, characterised in that the base (22) is plugged with the fixing part (3) only.

7. A vortex shedding flow sensor capable of replacing a vortex generator according to claim 2, wherein the length of the vortex generator (21) is smaller than the diameter of the pipe hole (11), and an elastic pad (24) is arranged at one end of the vortex generator (21) far away from the base (22).

8. A vortex street flow sensor with an exchangeable vortex shedder according to claim 1, characterized in that the vortex shedder (21) is a triangular prism, a quadrangular prism or a cylinder.

9. The vortex street flow sensor capable of replacing the vortex generator as claimed in claim 1, wherein the pipeline (1) is detachably connected with the connecting piece (4) and the fixing piece (3) by bolts, and one end of the connecting piece (4) far away from the pipeline (1) is detachably connected with the flow sensor (5) by bolts.